J, you are correct, the 1908 course ended at the then western terminus of the Motor Parkway near the Bethpage Lodge at Round Swamp Road. The drivers made a left turn and went about 200 feet on Round Swamp Road before turning on to Manetto Hill Road (now called Old Bethpage Road).

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The six Vanderbilt Cup Races held on Long Island from 1904 to 1910 were the greatest sporting events of their day, and the first international automobile road races held in the United States. The races had a far-reaching impact on the development of American automobiles and parkways. This site provides comprehensive information on the races, the Long Island Motor Parkway and current Long Island automotive events, car shows and news.